Credit

Caption

Lamellae of compact bone. Coloured Scanning Electron Micrograph (SEM) of a crystal formation of bone lamellae. Here, taken from fractured bone, the lamellae are in the unusual form of a rosette. These similar thickness crystals have been colour- coded according to maturation stages. They are normally arranged into concentric layers of tight circles, with more mature lamellae on the outside. Circles of lamellae occur around blood channels called Haversian canals. The lamellae are made of compacted collagen fibres and salts of calcium phosphate. They make up the bulk of compact bone. Magnification: x1,130 at 6x7cm size. Magnification: x1,430 at 4x5 inch size.